Subaru Legacy 2004 Service Manual page 2306

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
6 CHECK HARNESS CONNECTOR BETWEEN
ECM AND ACCELERATOR PEDAL POSI-
TION SENSOR.
1) Remove the connector from ECM.
2) Measure the resistance of harness
between ECM connector and accelerator pedal
position sensor connector.
Connector & terminal
2.0 L model and 2.5 L KS, KA model
(B135) No. 6 — (B136) No. 18:
2.5 L EC, EK, K4 model
(B135) No. 6 — (B136) No. 35:
7 CHECK INPUT SIGNAL FOR TCM USING
SUBARU SELECT MONITOR.
1) Connect the connectors to TCM, accelera-
tor pedal position sensor and ECM.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON (engine
OFF).
4) Turn the Subaru Select Monitor switch to
ON.
5) Fully open the throttle.
6) Read the data of accelerator pedal position
sensor using Subaru Select Monitor.
• Accelerator pedal position sensor input sig-
nal is indicated.
8 CHECK POOR CONTACT.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance less than 1
"?
Is the voltage less than 4.6 V? Go to step 8.
Is there poor contact in accel-
erator pedal position sensor
circuit?
4AT(diag)-103
Yes
Go to step 7. Repair the open
circuit in harness
between ECM and
accelerator pedal
position sensor.
Even if the SPORT
indicator light is
blinking, the cir-
cuit has returned
to normal condi-
tion at this time. A
temporary poor
contact of connec-
tor or harness may
be the cause.
Repair the har-
ness or connector
in accelerator
pedal position sen-
sor circuit.
Repair the poor Replace the TCM.
contact. <Ref. to 4AT-65,
Transmission Con-
trol Module
(TCM).>
No